Sousa revealed at the weekend that top-scorer Dexter Blackstock's loan move to Nottingham Forest had been agreed without his knowledge.
"It is a decision for the board and only they can answer it. I'm not frustrated, I said from the first day I have to adapt and try to do my best with the players I have," he said after his side's goalless draw with Crystal Palace
Sousa's predecessor Iain Dowie's 15-match spell with the west London side came to an end after he clashed with Briatore, who is also Renault's Formula 1 boss, over team selection.
John Gregory and Luigi de Canio have had short-lived managerial stints during Briatore's 18 months at the helm after the Italian bought the club with a group of friends, including F1's billionaire supremo Bernie Ecclestone in September 2007.
Ainsworth and Mick Harford have also failed to persuade the Italian to promote them to full-time roles whilst filling caretaker positions.
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